fix missing switch fallthrough (delete problem -> statistics)
tweak TestResult message to be more like previous format

But, still show the actual output for JAVA_METHOD, PYTHON_FUNCTION,
and RUBY_METHOD tests when they fail.
added a Cancel button to ImportProblemDialog
started EditUserDialog, based on EditUserView

Doesn't actually work yet.
in new edit user dialog, populate section info semi-correctly

Only one section per user is supported for now.
allow password/confirm password fields to be left blank in edit user dlg
the new EditUserDialog now actually updates the user